Specifications:USB power supply mode and DC power supply mode.USB3.0 ultra-high speed transmission rate, transfer rate up to 5Gbps per second.Backward compatible with USB2.0, USB1.1.Hubs and each peripheral device support plug and play and hot plug functions.4-port each overcurrent detection and protection design.Built-in LED indicator shows the USB power supply, DC power supply, USB peripheral device connection status of each USB port in.No need to install any drivers.Compatible for Windows 7/Vista/XP and other operating systems.Type: 4 Ports USB 3.0 Expansion HUBTransfer Rate: 5GbpsConnection Interface: USB 3.0 x 4Compatible Systems: for Windows 7/Vista/XPFeatures: 4 Ports, Plug and Play, Easy to Use, High SpeedUSB Cable Length: 30cm/11.8 (Approx.)Notes:Due to the light and screen setting difference, the item 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x 4 Ports USB 3.0 Expansion HUB Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-48597 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it